1||0|182|0| 0|0|0|||||very tiny correction|james|1|13:16:39|04/11/2008|http%3A%2F%2Fwww.cut-the-knot.org%2Fproofs%2FWhy17.shtml%0D%0A%0D%0AIn %22The only odd numbers not covered by the theorem are those in the form 4n %2B 1%3A 1%2C 9%2C 17%2C ...%22 I believe you meant %228n %2B 1%22 instead. %0D%0A 1|1|0|||||RE%3A very tiny correction|alexb||13:18:25|04/11/2008|A correction by a factor of 2 %28asymptotically%2C of course%29%21%0D%0A%0D%0AMany sincerest thanks.